Advanced Adventures 23: Down the Shadowvein (d20)
Down the Shadowvein is an OSRIC(tm) module designed for 6-10 adventurers of levels 3-5.
You carefully load your canoes and launch into the fast-moving waters of the underground river named Shadowvein. The Pod-Caverns of the Sinister Shroom behind you¸ the veracity of the map that is to be your guide into the dark unknown will soon be tested. Hopefully what is written is accurate¸ but if it is not¸ your wits¸ wile¸ and brawn should serve you well as you journey down the Shadowvein!
Down the Shadowvein picks up where The Pod Caverns of the Sinister Shroom left off¸ but it can be played by those who have not explored that module. Down the Shadowvein continues in The Mouth of the Shadowvein.